Function and Application
The CHINT NHM5NEDC series DC isolating switch is suitable for circuits with rated voltage DC1500V and below, and rated current 1250A to 1600A. The product can be operated under load and is widely used as isolation between load and power supply to ensure personnel safety during equipment maintenance. The product is widely applicable in new energy inverter, converter and other power distribution application scenarios.
Detailed Description
Parameters:
Rated Operating Voltage: DC750/1000/1500
Rated Current: 1250A, 1600A
Rated Insulation Voltage: 1600V
Rated Short-Time Withstand Current: 20kA/1s
Advantages/Core Functions:
01 Excellent Performance
The maximum rated operating voltage can reach DC1500V, meeting the needs of high-voltage DC power supply scenarios
02 Long Life
The mechanical life of the product can reach 15000 times, greatly reducing the cost of later maintenance and replacement
03 Safe and Reliable
The product is suitable for -40~+75℃ usage environment, and still operates reliably in various harsh environments
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Product Model | | NHM5-1250, NHM5DC-1250; NHM5-1600, NHM5DC-1600 |
| Rated Operating Current I<sub>n</sub>, 40℃ | | 1250; 1600 |
| Electrical Performance | Rated Operating Voltage U<sub>e</sub>(V) | AC 400V/415V, AC 690V, AC 1140V; DC 750V/DC 1000V, DC 1500V (only NHM5DC) |
| Rated Insulation Voltage U<sub>i</sub>(V) | 1600 |
| Rated Impulse Withstand Voltage U<sub>imp</sub>(kV) | 12 |
| Poles | 3P/4P |
| Rated Short-Time Withstand Current I<sub>cw</sub>(kA, 1s) | Body: 20; 30 |
| Rated Short-Circuit Making Capacity I<sub>cm</sub>(kA) | 40; 63 |
| Compliant Standards | IEC/EN 60947-3, GB/T 14048.3 |
| Usage Category | | AC400V/415V, AC690V; AC 1140V; DC750V, DC1000V, DC1500V; DC-22A, DC-22B, DC-23A, DC-23B, DC-23A, DC-PV2 (only NHM5DC) |
| Operating Environment Temperature (℃) | | -40℃~+75℃ |
| Isolation Function | | |
| Wiring Method | | Top / Bottom Free Wire Entry |
| Mechanical Life (times) | Unmaintained | 15000 |
| Maintained | 20000 |
| Electrical Life (times) | AC 400/415V | 2500 |
| AC 690V | 1000 |
| AC 1140V | 1000 |
| DC 750/1000/1500V | 1000 (only NHM5DC) |
| Dimensions | Fixed Type | Front Panel Connection Board; Rear Panel Wiring (only NHM5) |
| Dimensions (mm) Width(W)/Height(H)/Depth(D) | Width W (3P/4P): 210/280; Height H: 286; Depth D: 167 |
